mozc: fix getpw for musl

Fix: void-linux#56017

Author: sgn

srcpkgs/mozc/patches/musl-getpw.patch

@@ -0,0 +1,14 @@
+--- a/mozc/src/base/system_util.cc
++++ b/mozc/src/base/system_util.cc
+@@ -526,7 +526,11 @@ std::string SystemUtil::GetUserNameAsStr
+   DCHECK_NE(FALSE, result);
+   return win32::WideToUtf8(wusername);
+ #else   // _WIN32
++#if defined(__linux__) && !defined(__GLIBC__)
++  const int bufsize = 1024;
++#else
+   const int bufsize = sysconf(_SC_GETPW_R_SIZE_MAX);
++#endif
+   CHECK_NE(bufsize, -1);
+   absl::FixedArray<char> buf(bufsize);
+   struct passwd pw, *ppw;

srcpkgs/mozc/template

@@ -4,7 +4,7 @@ reverts="2.32.5851.102_1"
 # src/data/version/mozc_version_template.bzl
 # revision is always 102, template always says 100 ;)
 version=2.31.5851.102
-revision=1
+revision=2
 _commit=6a2e6e292efe4c2048e0c86b0818a4897c4aa5b7
 _abseil=20250512.0
 _protobuf_commit=74211c0dfc2777318ab53c2cd2c317a2ef9012de